Review of Recent Inkjet-Printed Capacitive Tactile Sensors

Salim, Ahmed; Lim, Sungjoon

doi:10.3390/s17112593

Cited by 85 publications

(60 citation statements)

References 67 publications

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“…The proposed temperature sensor was developed by a fully printing process. As a facile fabrication technique, printing not only possesses advantages in low cost and easy patterning, but also offers good uniformity and reproducibility in devices performance [25][26][27][28][29][30][31] . The structure of the temperature sensor was shown in Fig.…”

Section: Resultsmentioning

confidence: 99%

Fully Printed PEDOT:PSS-based Temperature Sensor with High Humidity Stability for Wireless Healthcare Monitoring

Wang

Sekine

Takeda

et al. 2020

Sci Rep

215

201

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, takeo Shiba, takao nishikawa & Shizuo tokito * facile fabrication and high ambient stability are strongly desired for the practical application of temperautre sensor in real-time wearable healthcare. Herein, a fully printed flexible temperature sensor based on cross-linked poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) was developed. By introducing the crosslinker of (3-glycidyloxypropyl)trimethoxysilane (GOPS) and the fluorinated polymer passivation (CYTOP), significant enhancements in humidity stability and temperature sensitivity of PEDOT:PSS based film were achieved. The prepared sensor exhibited excellent stability in environmental humidity ranged from 30% RH to 80% RH, and high sensitivity of −0.77% °C −1 for temperature sensing between 25 °C and 50 °C. Moreover, a wireless temperature sensing platform was obtained by integrating the printed sensor to a printed flexible hybrid circuit, which performed a stable real-time healthcare monitoring. Body temperature is an essential vital parameter reflecting the physiological activities. Monitoring of body temperature provides insight into human health conditions, such as cardiovascular condition, wound healing, pulmonological diagnostics, and syndromes prediction 1-4. Therefore, the flexible temperature sensor is highly desired to realize personal healthcare devices, which enable real-time monitoring of an individual's health state 5,6. Many efforts have been made to develop flexible temperature sensors, which mainly contain three types: pyroelectric detectors 7,8 , resistive temperature detectors (RTDs) 9,10 , and thermistors 11. Among them, the thermistor which relies on the thermo-resistive effect of sensing material is widely used, due to its simple device structure, fast response, and wide sensing range 12,13. Various thermistor materials have been developed and investigated, including composites of conductive filler with polymer, and temperature sensing conductive materials such as silver nanowire (AgNW) 14,15 , carbon nanotubes (CNTs) 16 , reduced graphene oxide (rGO) 17,18 , and poly(3,4-ethylenedioxythiophene): poly(styrenesulfonate) (PEDOT:PSS) 19,20. However, most of these studies focused on improving the sensitivity and mechanical performance of temperature sensors, while their ambient stability, especially humidity stability, has rarely been considered. Additionally, the development of wearable temperature sensors via simple fabrication still a big challenge. Since the use of wearable devices inevitably exposed to ambient humidity, it is of great interest to develop a facile fabricated humidity-resistant temperature sensor. In contrast to its counterparts, PEDOT:PSS has been proven as a promising candidate for the wearable temperature sensor, not only owing to its outstanding mechanical properties and turntable electrical characteristics, but also the superior in simple, patternable, and high reproducible fabrication, such as printing 21,22. However, as a water-soluble polymer, the resistance of PEDOT:PSS also be easily affecte...

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Section: Resultsmentioning

confidence: 99%

Fully Printed PEDOT:PSS-based Temperature Sensor with High Humidity Stability for Wireless Healthcare Monitoring

Wang

Sekine

Takeda

et al. 2020

Sci Rep

215

201

View full text Add to dashboard Cite

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“…While inkjet printing has traditionally been used in publishing industry, it has also more recently become a popular method in fabrication of electronic and mechanical devices due to the flexible and cheap nature of this deposition technology involving a limited number of process steps and low material waste. Unlike competing deposition methods such as spin‐coating and drop‐casting, inkjet printing enables space‐confined patterning via material deposition based on a layout designed in software . Hence, the inkjet printing has been widely employed in the fabrication of a wide range of (opto)electronic devices, is the most widely used printing methods for printed electronics, and among the most promising approach for flexible and wearable electronics.…”

Section: Patterning Of 2d Inks Into Functional Structures For Electromentioning

confidence: 99%

Production and Patterning of Liquid Phase–Exfoliated 2D Sheets for Applications in Optoelectronics

Witomska

Leydecker

Ciesielski

et al. 2019

Adv Funct Materials

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2D materials (2DMs), which can be produced by exfoliating bulk crystals of layered materials, display unique optical and electrical properties, making them attractive components for a wide range of technological applications. This review describes the most recent developments in the production of high-quality 2DMs based inks using liquid-phase exfoliation (LPE), combined with the patterning approaches, highlighting convenient and effective methods for generating materials and films with controlled thicknesses down to the atomic scale. Different processing strategies that can be employed to deposit the produced inks as patterns and functional thin-films are introduced, by focusing on those that can be easily translated to the industrial scale such as coating, spraying, and various printing technologies. By providing insight into the multiscale analyses of numerous physical and chemical properties of these functional films and patterns, with a specific focus on their extraordinary electronic characteristics, this review offers the readers crucial information for a profound understanding of the fundamental properties of these patterned surfaces as the millstone toward the generation of novel multifunctional devices. Finally, the challenges and opportunities associated to the 2DMs' integration into working opto-electronic (nano) devices is discussed.

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“…Its advantages include the ability to print solutions of various materials, the extremely low waste, and fine control of deposition parameters such as droplet location and number of printed droplets. Inkjet printing has been used to print thin‐film transistors on plastic substrates, fabricate tactile sensors, 2D force sensors, biosensors, and in a variety of other applications . Inkjet printing can be classified into the solution processing category which also includes spraying, aerosol‐based, layer‐by‐layer, simple solution‐evaporation, and dip coating …”

Section: Processing Of Carbon Nanomaterials For Flexible Sensorsmentioning

confidence: 99%

Fabrication and Patterning Methods of Flexible Sensors Using Carbon Nanomaterials on Polymers

Costa

Choi

2020

Advanced Intelligent Systems

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Flexible sensors composed of carbon nanostructures and elastic materials have been developed for healthcare monitoring, environmental monitoring, disposable biochemical or electrochemical sensors, and many other applications. Fabrication approaches for such sensors and their advantages and current issues related to patterning high-performance flexible sensors are reviewed. A focus is placed on patterning techniques for carbon-based flexible sensors including carbon nanotubes, graphene, and other carbon nanostructures. First, novel patterning techniques for nanomaterials are described, along with their current challenges. Next, emerging flexible sensors including humidity, temperature, strain, and pressure sensors are discussed. Finally, the challenges and perspectives for flexible sensors are addressed. REVIEW www.advintellsyst.com

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Review of Recent Inkjet-Printed Capacitive Tactile Sensors

Cited by 85 publications

References 67 publications

Fully Printed PEDOT:PSS-based Temperature Sensor with High Humidity Stability for Wireless Healthcare Monitoring

Fully Printed PEDOT:PSS-based Temperature Sensor with High Humidity Stability for Wireless Healthcare Monitoring

Production and Patterning of Liquid Phase–Exfoliated 2D Sheets for Applications in Optoelectronics

Fabrication and Patterning Methods of Flexible Sensors Using Carbon Nanomaterials on Polymers

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